gelbooruhttps://xbooru.com/index.php?page=atom&tags=1boy 2d 2d (artwork) arm support artist name bad id bad tumblr id black clothing blush bulge clothed clothed male digital media (artwork) english text erection erection under clothes floor gaster gaster (undertale) giaru (artist) hand on own crotch horny horny male humanoid looking down male male only monster sitting sitting on floor solo solo male text third-party source tumblr username undertale undertale (series) video games visible breath wingdings2024-05-14T22:16:32Zgelbooru